US8282320B2 - Eight-edged cutting insert, and tool holder for same - Google Patents

Eight-edged cutting insert, and tool holder for same Download PDF

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Publication number
US8282320B2
US8282320B2 US12/597,992 US59799208A US8282320B2 US 8282320 B2 US8282320 B2 US 8282320B2 US 59799208 A US59799208 A US 59799208A US 8282320 B2 US8282320 B2 US 8282320B2
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United States
Prior art keywords
cutting insert
chip
lip
bearing surface
tool holder
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Active, expires
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US12/597,992
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English (en)
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US20100119313A1 (en
Inventor
Rudi Hartlohner
Igor Kaufmann
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Kennametal Inc
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Kennametal Inc
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Assigned to KENNAMETAL INC. reassignment KENNAMETAL INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HARTLOHNER, RUDI, KAUFMANN, IGOR
Publication of US20100119313A1 publication Critical patent/US20100119313A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
    • B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
    • B23B27/16—Cutting tools of which the bits or tips or cutting inserts are of special material with exchangeable cutting bits or cutting inserts, e.g. able to be clamped
    • B23B27/1614—Cutting tools of which the bits or tips or cutting inserts are of special material with exchangeable cutting bits or cutting inserts, e.g. able to be clamped with plate-like cutting inserts of special shape clamped against the walls of the recess in the shank by a clamping member acting upon the wall of a hole in the insert
    • B23B27/1618—Cutting tools of which the bits or tips or cutting inserts are of special material with exchangeable cutting bits or cutting inserts, e.g. able to be clamped with plate-like cutting inserts of special shape clamped against the walls of the recess in the shank by a clamping member acting upon the wall of a hole in the insert characterised by having chip-breakers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C5/00—Milling-cutters
    • B23C5/16—Milling-cutters characterised by physical features other than shape
    • B23C5/20—Milling-cutters characterised by physical features other than shape with removable cutter bits or teeth or cutting inserts
    • B23C5/202—Plate-like cutting inserts with special form
    • B23C5/205—Plate-like cutting inserts with special form characterised by chip-breakers of special form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2200/00—Details of cutting inserts
    • B23B2200/08—Rake or top surfaces
    • B23B2200/085—Rake or top surfaces discontinuous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2200/00—Details of cutting inserts
    • B23B2200/08—Rake or top surfaces
    • B23B2200/086—Rake or top surfaces with one or more grooves
    • B23B2200/087—Rake or top surfaces with one or more grooves for chip breaking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2200/00—Details of cutting inserts
    • B23B2200/16—Supporting or bottom surfaces
    • B23B2200/163—Supporting or bottom surfaces discontinuous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2200/00—Details of cutting inserts
    • B23B2200/20—Top or side views of the cutting edge
    • B23B2200/201—Details of the nose radius and immediately surrounding area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2200/00—Details of cutting inserts
    • B23B2200/20—Top or side views of the cutting edge
    • B23B2200/202—Top or side views of the cutting edge with curved cutting edge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2200/00—Details of cutting inserts
    • B23B2200/20—Top or side views of the cutting edge
    • B23B2200/204—Top or side views of the cutting edge with discontinuous cutting edge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2200/00—Details of cutting inserts
    • B23B2200/24—Cross section of the cutting edge
    • B23B2200/245—Cross section of the cutting edge rounded
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2200/00—Details of cutting inserts
    • B23B2200/36—Other features of cutting inserts not covered by B23B2200/04 - B23B2200/32
    • B23B2200/3681—Split inserts, i.e. comprising two or more sections roughly equal in size and having similar or dissimilar cutting geometries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2200/00—Details of cutting inserts
    • B23B2200/36—Other features of cutting inserts not covered by B23B2200/04 - B23B2200/32
    • B23B2200/369—Mounted tangentially, i.e. where the rake face is not the face with the largest area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2205/00—Fixation of cutting inserts in holders
    • B23B2205/12—Seats for cutting inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2200/00—Details of milling cutting inserts
    • B23C2200/36—Other features of the milling insert not covered by B23C2200/04 - B23C2200/32
    • B23C2200/367—Mounted tangentially, i.e. where the rake face is not the face with largest area
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T407/00—Cutters, for shaping
    • Y10T407/22—Cutters, for shaping including holder having seat for inserted tool
    • Y10T407/2272—Cutters, for shaping including holder having seat for inserted tool with separate means to fasten tool to holder
    • Y10T407/2274—Apertured tool
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T407/00—Cutters, for shaping
    • Y10T407/23—Cutters, for shaping including tool having plural alternatively usable cutting edges
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T407/00—Cutters, for shaping
    • Y10T407/23—Cutters, for shaping including tool having plural alternatively usable cutting edges
    • Y10T407/235—Cutters, for shaping including tool having plural alternatively usable cutting edges with integral chip breaker, guide or deflector

Definitions

  • the invention relates to an eight-edged, rotatable and reversible cutting insert having two opposite, substantially square base surfaces which are twisted relative to one another about a central axis running perpendicularly to said base surfaces, and having four identical side surfaces, wherein a main lip is formed between each base surface and each side surface. It also relates to a tool holder for such a cutting insert.
  • a multi-edged cutting body made of a hard cutting material is known from DE-B 1 232 436, said cutting body being formed from two truncated-pyramid-like cutting body halves, the base surfaces of which, located opposite one another while forming four identical side surfaces, are twisted relative to one another.
  • the side surfaces form with both base surfaces a total of eight cutting edges which extend in each case over the entire length of the side surfaces and of the base surfaces.
  • a central hole running at right angles to the base surfaces of the cutting body halves and therefore perpendicularly to the central axis serves to accommodate a screw, by means of which the cutting insert can be fastened in a recess of a tool holder.
  • the four identical side surfaces have flat rake faces which are assigned to and are adjacent to the respective cutting edges and which extend transversely to the central axis along the entire cutting edge and in the direction of the central axis up to the side surface center, in which the two cutting body halves are adjacent to one another.
  • the eight cutting edges thereof can be brought into use one after the other by rotating and reversing the cutting tip in the tool holder.
  • the object of the invention is to specify an eight-edged cutting insert of the type mentioned at the beginning which is improved in particular with regard to a reliable tip seat in a tool holder. Furthermore, a tool holder which is especially suitable for accommodating such a cutting insert is to be specified.
  • the eight-edged rotatable and reversible cutting insert according to the invention has a bearing surface in each side surface between the chip grooves, said bearing surface extending symmetrically beyond the groove ends of the adjacent chip groove and transversely to the main lips until it adjoins the latter.
  • the main lips extend only over part of the length of the respective side surface.
  • the respective main lip extends between the associated corner edge and a rounded-off edge section of this base surface.
  • the corner edges are preferably rounded off or are of circular or curved design.
  • the rounded-off edge section expediently forms, at least partly or sectionally, the secondary flank of the secondary lip of the adjacent side surface.
  • the bearing surface has a roughly circular or oval surface contour having a waisted central surface region drawn in in a hyperbolic manner.
  • the bearing surface has the shape of a battle-axe.
  • the chip grooves are in this case formed between the waisted central surface region and the diagonally opposite corner edges (corner radii).
  • the bearing surface also expediently extends in the longitudinal direction of the main lips over the entire side surface.
  • the bearing surface in a symmetrical manner, in particular in a rotationally symmetrical manner with respect to the waisted central surface region, has two wedge-shaped surface regions. The surface tips of the latter are preferably brought up to the secondary lips of the adjacent side surfaces.
  • the respective wedge-shaped surface region of the bearing surface in particular in conjunction with the rounded-off edge section, forms the part or a part of the secondary flank for the secondary lip of the adjacent side surface.
  • the respective chip groove has a groove corner which is diagonally opposite the respective corner edge and is suitably rounded-off and is in particular circular or curved. With this groove corner, the chip groove adjoins the bearing surface.
  • the chip grooves are preferably designed as chip pockets drawn into the side surface. These chip pockets extend along the main lip assigned thereto between the corner edge, at which the main lip merges into the secondary lip, up to a rear chip pocket end. The chip pocket ends within this side surface at the respective chip pocket end.
  • the chip pockets in this case, as well as the secondary lips, the main lips and the corner edges which connect said secondary and main lips and are expediently of circular or curved design, are arranged diagonally opposite one another.
  • Each chip pocket and also the main lip assigned thereto and the secondary lip likewise assigned to said chip pocket and running substantially transversely to the main lip are therefore always located in the region of one of the two cutting body halves or cutting insert halves, the base surfaces of which, spaced apart by the width of the side surface, are twisted relative to one another.
  • the other lips (main and secondary lips) together with the chip pocket assigned to them are then arranged within the same side surface on the opposite side in the other cutting body half.
  • the bearing surface is raised between the two chip pockets of the respective side surface and relative to the pocket bottoms of the two chip pockets. To the rear of the respective chip pocket end, the bearing surface extends symmetrically up to the main lips opposite one another, whereas a comparatively narrow surface region in the shape of the waisted surface region of the bearing surface is provided in the region between the chip pockets.
  • each chip pocket has a comparatively long pocket ridge which is brought up to the main lip assigned to this chip pocket.
  • a further, comparatively narrow pocket ridge of the same chip pocket is brought up to the secondary lip connected to this main lip via the corner edge.
  • the pocket ridge or each of these pocket ridges can be arched inward (concavely) toward the central axis, with a sunken main lip and a sunken secondary lip, respectively, being formed. Consequently the main lip and/or the secondary lip are/is drawn in toward the central axis in the edge region between this side surface and the base surface assigned thereto or the side surface adjacent to said side surface.
  • the corresponding corner edge then has a transition region which is raised relative to the drawn-in main lip and the adjacent likewise drawn-in secondary lip.
  • the secondary lips of side surfaces adjacent to one another are directed past one another in a partly overlapping but spaced-apart manner.
  • the lip ends, directed past one another in a spaced-apart manner, of the secondary lips form an offset surface in each of these two adjacent side surfaces.
  • These two offset surfaces are disposed at an angle, expediently at an obtuse angle or approximately at a right angle, to one another.
  • a multi-edged, rotatable and reversible cutting insert in which the secondary lips of side surfaces adjacent to one another are directed past one another in a spaced-apart manner at the ends and while forming offset surfaces disposed at an angle to one another is already inventive on its own.
  • This design of the secondary lips of such a cutting insert therefore represents an independent invention.
  • the cutting insert according to the invention has 90° symmetry.
  • the lips, effective as main and secondary lips, or cutting edges of the cutting insert can therefore be brought into use one after the other by a respective 90° rotation of the cutting insert in a tool holder before the cutting insert is reversed in the tool holder by 180° in order to bring into use the other four lips by corresponding 90° rotations.
  • the cutting insert suitable in particular as a tangential cutting insert, is arranged on end in the tool holder with respect to the longitudinal axis of the workpiece to be machined.
  • An especially preferred tool holder for such an eight-edged, rotatable and reversible cutting insert or tangential cutting insert has a recess as tip seat, comprising a bearing surface for the cutting insert to bear against with its base surfaces, and two seating regions arranged substantially at right angles relative thereto and to one another and intended for the cutting insert to bear against with its side surfaces.
  • These seating regions are designed for the respective side surface to bear against with its bearing surface.
  • the seating regions expediently have a supporting region designed like an impression of the level or planar bearing surfaces of the identical side surfaces.
  • the high forces produced during the machining are reliably introduced into the tool holder and are therefore absorbed by the latter in order to ensure a non-destructible tip seat.
  • the cutting insert according to the invention is advantageously produced as a pressed or die-cast part.
  • a grinding operation normally required following a pressing operation for such a cutting body in a further machining step can therefore be dispensed with.
  • FIG. 1 shows, in a perspective view, an eight-edged cutting insert having cutting body halves twisted relative to one another and having bearing surfaces provided in the identical side surfaces and waisted in a hyperbolic-like manner in the region of the surface center,
  • FIG. 2 shows, in a perspective view, a variant of the cutting insert having additional wedge-shaped surface regions of the bearing surfaces
  • FIG. 3 shows, in a perspective view, an embodiment of the cutting insert according to FIG. 1 having drawn-in or inwardly arched main lips and drawn-in or inwardly arched secondary lips,
  • FIG. 4 shows a tool holder for accommodating such a cutting insert, in a perspective view
  • FIG. 5 shows the tool holder with inserted cutting insert (tangential cutting insert) in a side view.
  • the tangential cutting insert 1 which is designated below as cutting insert, has two opposite, identical and substantially square base surfaces 2 and four identical side surfaces 3 , of which two adjacent side surfaces 3 can be seen.
  • the central tip axis or central axis A 1 perpendicular to the base surfaces 2 runs in the y direction.
  • An axis A 2 perpendicular thereto runs in the z direction and is disposed perpendicularly to two opposite side surfaces 3 .
  • An axis A 3 which is perpendicular to both the central axis A 1 and this axis A 2 and which runs perpendicularly to the other two opposite side surfaces 3 runs in the x direction.
  • the center plane of the cutting tip 1 is located in the plane defined by the axes A 2 and A 3 normal to the side surfaces 3 , the two base surfaces 2 being spaced equidistantly from this center plane along the central axis A 1 .
  • the two base surfaces 2 are twisted relative to one another about the central axis A 1 as can be seen comparatively clearly from FIG. 5 .
  • the twist angle ⁇ of the two base surfaces 2 should in principle be greater than 0° and less than 20° and is in particular (10 ⁇ 5)°.
  • the twist angle ⁇ is preferably within the region of a conventional or typical clearance angle of about 6° and is preferably about 8°.
  • Each of the identical side surfaces 3 forms with each base surface 2 a main lip 4 .
  • the latter extends only over part of the length of the respective side surface 3 .
  • each side surface 3 has opposite, rounded-off or curved corner edges 5 .
  • Said corner edges 5 form a secondary lip 6 adjacent to the respective main lip 4 and extending into the side surface 3 adjacent to this side surface 3 .
  • a chip groove 7 is assigned to each of these cutting edges formed from main lip 4 , corner edge 5 and secondary lip 6 .
  • Said chip groove 7 is designed as a chip pocket drawn into the respective side surface 3 , i.e. arched inward toward the central axis A 1 .
  • Two chip grooves 7 also designated below as chip pockets, as well as the assigned main lips 4 , the corner edges 5 and the secondary lips 6 , therefore lie diagonally opposite one another within the respective side surface 3 .
  • Each chip pocket 7 has a pocket ridge 7 a drawn up to the respective main lip 4 , i.e. drawn up with respect to a pocket bottom 7 e , and a pocket ridge 7 b brought up to the respective secondary lip 6 and also a pocket ridge 7 c facing the other respective chip pocket 7 of this side surface 3 , and a chip groove or chip pocket end 7 d .
  • the chip groove end 7 d which is located inside the respective side surface 3 , is spaced apart from the next adjacent side surface 3 .
  • This chip groove or chip pocket end 7 d is likewise formed by a pocket ridge raised relative to the pocket bottom 7 e.
  • a bearing surface 8 is formed between the two chip grooves or chip pockets 7 of the respective side surface 3 .
  • This planar or level bearing surface 8 raised relative to the chip pockets 7 extends symmetrically beyond the chip groove ends 7 d of the adjacent chip groove 7 and transversely to the main lips 4 until it adjoins the latter.
  • the main lips 4 starting from the respective corner edge 5 , therefore run along the bearing surface 8 right up to a rounded-off edge region 9 provided between this side surface 3 and the base surface 2 assigned to the main lip 4 .
  • Said edge region 9 ends virtually in the rounded-off or curved corner edge 5 of the respectively adjacent side surface 3 .
  • the rounded-off edge region 9 forms at least a section of a secondary flank for the secondary lip 6 of the adjacent side surface 3 .
  • the respective bearing surface 8 is in principle oval, circular or elliptical.
  • the bearing surface 8 In the region of the surface center of the respective side surface 3 , the bearing surface 8 has a waisted surface region 8 a drawn in in a hyperbolic-like manner. Widened surface regions 8 b adjoin this waisted surface region 8 a rotationally symmetrically to the respective axis A 2 , A 3 .
  • the four identical bearing surfaces 8 of the four identical side surfaces 3 therefore have virtually the shape of a battle-axe.
  • the bearing surface 8 in this shape or geometry is therefore twisted about the respective axes A 2 and A 3 perpendicular to the side surfaces 3 opposite one another in each case.
  • the chip grooves or chip pockets 7 directly adjoin the central waisted surface region 8 a of the bearing surface 8 .
  • the respective chip groove 7 therefore has a rounded-off, circular or curved groove corner 7 f which is diagonally opposite the respective corner edge 5 and with which this chip groove or chip pocket 7 adjoins the bearing surface 8 .
  • the respective rounded-off groove corner 7 f therefore forms at least part of the groove or pocket end 7 d .
  • the chip grooves 7 extend between the main and secondary lips 4 and 6 , respectively, and the waisted central surface region 8 a of the bearing surface 8 and also that surface region or section of the rounded-off edge region 9 which forms the secondary flank for the secondary lip 6 of the respectively adjacent side surface 3 .
  • the secondary lips 6 of the side surfaces 3 adjacent to one another overlap in a spaced-apart manner—in the planes of the respective side surface 3 .
  • the two secondary lips 6 therefore do not merge into one another either directly or indirectly, but rather run in a spaced-apart manner, with offset surfaces 10 being formed.
  • These offset surfaces 10 are located in the plane of the corresponding side surface 3 and are therefore disposed at right angles or at an obtuse angle to one another.
  • a central hole 11 which passes through the cutting tip 1 along the central axis A 1 serves to accommodate a fixing element (not shown), for example a screw or a bolt, for tightening and/or clamping the cutting insert 1 in a tool holder, shown in FIGS. 4 and 5 , of a turning tool.
  • a fixing element for example a screw or a bolt
  • the cutting insert 1 shown in FIG. 2 again corresponds to the cutting insert 1 according to FIG. 1 , wherein, in contrast to the cutting insert 1 shown there, the bearing surface 8 has two diagonally opposite wedge-shaped surface regions 12 . These surface regions 12 adjoin the respective chip groove or chip pocket end 7 d of the chip groove or chip pocket 7 located in the same cutting body half 1 a , 1 b .
  • level surface regions 12 symmetrical with respect to the axis A 2 or A 3 extend, starting from their widened surface ridge 12 a facing the waisted surface region 8 a and adjoining the latter, with their surface tip 12 b , opposite said surface ridge 12 a , right up to the respective secondary lip 6 of the adjacent side surface 3 in this cutting tip half 1 a or 1 b and form there the or a further section of the secondary flank.
  • the chip grooves 7 extend between the main and secondary lips 4 and 6 , respectively, and the waisted central surface region 8 a of the bearing surface 8 and also the wedge-shaped surface region 12 thereof.
  • the cutting insert 1 shown in FIG. 3 differs from the cutting insert according to FIG. 1 in that the respective main lip 4 and the respective secondary lip 6 are arched (concavely) inward, i.e. are drawn in toward the central axis A 1 .
  • the transition region between the main lip 4 and the secondary lip 6 represents the highest cutting edge point 13 within the corner edge 5 .
  • the cutting edge point 13 and thus the corner edge 5 are further away than that cutting edge region of the drawn-in or inwardly arched main lip 4 and/or secondary lip 6 which is at the smallest or minimum cutting edge distance from the central axis A 1 .
  • FIG. 4 shows, in perspective, a tool holder 14 for such an eight-edged, rotatable and reversible cutting insert 1 .
  • the tool holder 14 has a recess 15 as tip seat for the cutting insert 1 .
  • the tool holder 14 designed as a turning tool and having inserted cutting insert 1 is shown in FIG. 5 in a side view of a side surface 3 .
  • the recess 15 has a bearing surface 16 , against which the cutting insert 1 bears with its base surface 2 .
  • a tapped hole 17 in the region of this bearing surface 16 serves to accommodate the fixing screw (not shown) which passes through the central hole 11 in the cutting insert 1 and by means of which the cutting insert 1 is tightened inside the recess 15 against this bearing surface 16 in the fitted state.
  • the recess 15 has two seating regions 18 arranged substantially at right angles to one another and intended for the cutting insert 1 to bear against with in each case two side surfaces 3 adjacent to one another.
  • each of these seating regions 18 is a supporting region or a supporting surface 19 with which the respective side surface 3 is in contact merely in the region of the bearing surface 8 in the corresponding seating region 18 of the recess 15 .
  • Circular-arc-shaped corner regions 20 and 21 of the recess 15 form locating regions which are drawn into the tool holder 14 and in which those main lips 4 , secondary lips 6 or corner edges 5 of the cutting body 1 which are formed between the side surfaces 3 resting in the recess 15 and the base surface 2 bearing against the bearing surface 16 rest.
  • the or each seating region 18 may also be formed by a, for example plate-like, seating element 22 (shown by broken lines) as an additional rest which is inserted into the recess 15 and fixed there.
  • a plate-like, seating element 22 shown by broken lines
  • Such an additional seating element 22 preferably made of a hard material is advantageous in particular during heavy-duty cutting.
  • the cutting insert 1 is arranged on end in the tool holder 14 with respect to the longitudinal axis, running in the y direction, of the workpiece (not shown) to be machined.
  • the main and secondary lips 4 and 6 respectively, which are in use in this arrangement of the cutting tip 1 certainly lead in principle to a negative radial rake angle on account of the negative position of the cutting tip 1 in the tool holder 14 and as a result of the base side 2 which is in use and which is twisted relative to the base surface 2 bearing against the bearing surface 16 of the recess 15 .
  • the drawn-in configuration or geometry of the secondary lip 6 leads overall to a positive rake angle ⁇ .
  • the symmetrical bearing surface 8 especially suitable supporting points or supporting regions 19 for a reliable tip seat of the plate-like cutting tip 1 (cutting tip) in the tool holder 14 are produced.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Milling Processes (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
  • Milling, Broaching, Filing, Reaming, And Others (AREA)
  • Nonmetal Cutting Devices (AREA)
US12/597,992 2007-05-14 2008-02-02 Eight-edged cutting insert, and tool holder for same Active 2029-05-20 US8282320B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102007022535.2 2007-05-14
DE102007022535A DE102007022535A1 (de) 2007-05-14 2007-05-14 Achtschneidiger Schneideinsatz sowie Werkzeughalter hierfür
DE102007022535 2007-05-14
PCT/EP2008/000840 WO2008138414A1 (de) 2007-05-14 2008-02-02 Achtschneidiger schneideinsatz sowie werkzeughalter hierfür

Publications (2)

Publication Number Publication Date
US20100119313A1 US20100119313A1 (en) 2010-05-13
US8282320B2 true US8282320B2 (en) 2012-10-09

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Application Number Title Priority Date Filing Date
US12/597,992 Active 2029-05-20 US8282320B2 (en) 2007-05-14 2008-02-02 Eight-edged cutting insert, and tool holder for same

Country Status (13)

Country Link
US (1) US8282320B2 (de)
EP (1) EP2144724B1 (de)
JP (1) JP2010526678A (de)
KR (1) KR20100016473A (de)
CN (1) CN101668606B (de)
AT (1) ATE508827T1 (de)
BR (1) BRPI0807387A2 (de)
CA (1) CA2682311A1 (de)
DE (1) DE102007022535A1 (de)
MX (1) MX2009011771A (de)
PL (1) PL2144724T3 (de)
RU (1) RU2434720C2 (de)
WO (1) WO2008138414A1 (de)

Cited By (21)

* Cited by examiner, † Cited by third party
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US20110020080A1 (en) * 2009-07-26 2011-01-27 Iscar, Ltd. Cutting Insert and Rotary Cutting Tool
US20110150582A1 (en) * 2009-12-18 2011-06-23 Sandvik Intellectual Property Ab Face mill for fine milling
US20130129432A1 (en) * 2011-11-23 2013-05-23 Sandvik Intellectual Property Ab Cutting insert and a milling tool
USD713433S1 (en) 2014-03-21 2014-09-16 Kennametal Inc. Cutting insert
US20150117969A1 (en) * 2013-10-29 2015-04-30 Kennametal Inc. Cutting insert and shim for heavy machining operations
US20150183034A1 (en) * 2012-09-18 2015-07-02 Hartmetall-Werkzeugfabrik Paul Horn Gmbh Cutting insert and tool for machining a workpiece
US9073126B2 (en) 2010-11-15 2015-07-07 Taegutec, Ltd. Double-sided cutting insert
US20150328689A1 (en) * 2014-05-19 2015-11-19 Sandvik Intellectual Property Ab Cutting tool insert and cutting tool insert holder
US9205499B2 (en) 2013-09-11 2015-12-08 Kennametal Inc. Cutting insert with finishing and roughing cutting edges
US9211590B2 (en) 2013-09-20 2015-12-15 Kennametal Inc. Screw head wedge clamp assembly for cutting tool
US9211589B2 (en) 2013-10-08 2015-12-15 Kennametal Inc. Double-sided, nonagon cutting insert
US9475138B2 (en) 2014-01-22 2016-10-25 Kennametal Inc. Cutting tool having insert pocket with cantilevered member
USD777230S1 (en) 2015-07-16 2017-01-24 Kennametal Inc Double-sided tangential cutting insert
USD778330S1 (en) 2015-07-16 2017-02-07 Kennametal Inc. Double-sided tangential cutting insert
US9925596B2 (en) * 2014-05-19 2018-03-27 Sandvik Intellectual Property Ab Turning tool holder and cutting tool insert
US9981323B2 (en) 2015-07-16 2018-05-29 Kennametal Inc. Double-sided tangential cutting insert and cutting tool system using the same
US10035195B2 (en) 2012-08-28 2018-07-31 Kennametal Inc. Tool holder for tangential cutting insert
US11185931B2 (en) * 2017-07-18 2021-11-30 Ngk Spark Plug Co., Ltd. Cutting insert
US20220250174A1 (en) * 2021-02-10 2022-08-11 Tungaloy Corporation Cutting insert
US11484953B2 (en) 2019-06-20 2022-11-01 Kennametal India Limited Tool holder with pocket for accommodating cutting inserts with different clearance angles
EP4556146A1 (de) * 2023-11-20 2025-05-21 Seco Tools AB Schneidwerkzeug mit doppelseitigem tangentialschneideinsatz

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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DE102017109098A1 (de) * 2017-04-27 2018-10-31 Hartmetall-Werkzeugfabrik Paul Horn Gmbh Schneideinsatz und Werkzeug zur spanenden Bearbeitung eines Werkstücks
JP2019126882A (ja) * 2018-01-25 2019-08-01 日東工器株式会社 チップ
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US11413689B2 (en) * 2020-05-28 2022-08-16 Kennametal Inc. Cutting inserts with control cavities
CN113996824B (zh) * 2021-12-08 2023-03-31 株洲钻石切削刀具股份有限公司 一种多刃车削刀片

Citations (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3142110A (en) 1959-04-30 1964-07-28 Hertel Karl Cutting tool for lathes and similar machines
DE1232436B (de) 1957-04-09 1967-01-12 Karl Hertel Mehrschneidiger Schneidkoerper aus hartem Schneidwerkstoff
US3490117A (en) 1967-01-20 1970-01-20 Karl Hertel Tool holder
JPS5151579A (de) 1974-10-31 1976-05-07 Fujiwa Kako Kk
US4294566A (en) * 1980-06-16 1981-10-13 Carmet Company Eight edge positive chip control insert
US4636116A (en) 1981-05-30 1987-01-13 Tokyo Shibaura Denki Kabushiki Kaisha Cutting tool
JPH0685712U (ja) 1993-05-31 1994-12-13 住友電気工業株式会社 スローアウェイチップ
US5442981A (en) 1994-02-14 1995-08-22 Vegh; William R. Cutting tool
US5639189A (en) 1994-11-08 1997-06-17 Ingersoll Cutting Tool Company Plunge milling insert
US5810518A (en) 1995-09-25 1998-09-22 Sandvik Ab Fastening arrangement for cutting inserts and a cutting insert intended for such an arrangement
US5855457A (en) 1996-01-31 1999-01-05 Mitsubishi Materials Corporation Disposable cutting tip clamp for a milling machine
US6050751A (en) 1996-01-26 2000-04-18 Sandvik Ab Indexing of cutting inserts
US6053672A (en) 1995-09-18 2000-04-25 Iscar Ltd. Milling cutting insert and milling toolholder therefor
US6196771B1 (en) * 1996-10-17 2001-03-06 Seco Tools Ab Face-milling method and apparatus
WO2003074218A1 (en) 2002-03-06 2003-09-12 Iscar Ltd. Tangential cutting insert and insert holder
EP1380375A1 (de) 2002-07-11 2004-01-14 Wilhelm Fette GmbH Tangential-Wendeschneidplatte
US6742969B1 (en) 2002-12-24 2004-06-01 Kennametal Inc. Milling cutter insert with chip control and milling cutter using the same
DE10357811A1 (de) 2002-12-24 2004-07-22 Kennametal Inc. Fräsereinsatz mit Spansteuerung und Fräser, in dem dieser verwendet wird
US6769844B2 (en) 2001-01-10 2004-08-03 Kennametal Inc. Cutting insert and method of making the same
US6811359B2 (en) 2002-05-31 2004-11-02 Kennametal Inc. True helical cutter system
US20050063792A1 (en) 2003-09-24 2005-03-24 Iscar, Ltd. Tangential cutting insert and milling cutter
US6877935B2 (en) * 2001-01-18 2005-04-12 Böhlerit Ges. M.B.H. & Co. KG Cutting tool and indexable tip
US6929428B1 (en) 1999-06-16 2005-08-16 Sandvik Ab Cutting insert and cutting insert holder therefor
US20050214081A1 (en) 2002-12-04 2005-09-29 Iscar Ltd. Tangential cutting insert and milling cutter
US7147407B2 (en) * 2002-11-26 2006-12-12 Iscar Ltd. Cutting insert and cutting tool
EP1572407B1 (de) 2002-12-04 2007-01-03 Iscar Ltd. Tangentialschneideinsatz und fräswerkzeug
US20100303563A1 (en) * 2009-02-12 2010-12-02 Tdy Industries, Inc. Double-Sided Cutting Inserts for High Feed Milling
US7976250B2 (en) * 2009-02-12 2011-07-12 Tdy Industries, Inc. Double-sided cutting inserts for high feed milling

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4617273Y1 (de) * 1970-03-31 1971-06-16
JPS5151579U (de) * 1974-10-18 1976-04-19
SU1715511A1 (ru) * 1990-04-09 1992-02-28 Харьковский Институт Инженеров Железнодорожного Транспорта Им.С.М.Кирова Режущий инструмент
IL108995A (en) * 1994-03-16 1996-12-05 Iscar Ltd Exchangeable cutting insert
IL129297A (en) * 1998-07-13 2002-12-01 Iscar Ltd Tangential cutting insert
CN2362627Y (zh) * 1998-12-17 2000-02-09 余鹏 可转位硬质合金端面刀片
RU2201317C2 (ru) * 2001-03-11 2003-03-27 Государственное научно-производственное предприятие "Технология" Тангенциальная режущая пластина
CN2887494Y (zh) * 2006-05-19 2007-04-11 四川天虎工具有限责任公司 机夹焊接重型车刀

Patent Citations (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1232436B (de) 1957-04-09 1967-01-12 Karl Hertel Mehrschneidiger Schneidkoerper aus hartem Schneidwerkstoff
US3142110A (en) 1959-04-30 1964-07-28 Hertel Karl Cutting tool for lathes and similar machines
US3490117A (en) 1967-01-20 1970-01-20 Karl Hertel Tool holder
JPS5151579A (de) 1974-10-31 1976-05-07 Fujiwa Kako Kk
US4294566A (en) * 1980-06-16 1981-10-13 Carmet Company Eight edge positive chip control insert
US4636116A (en) 1981-05-30 1987-01-13 Tokyo Shibaura Denki Kabushiki Kaisha Cutting tool
JPH0685712U (ja) 1993-05-31 1994-12-13 住友電気工業株式会社 スローアウェイチップ
US5442981A (en) 1994-02-14 1995-08-22 Vegh; William R. Cutting tool
US5639189A (en) 1994-11-08 1997-06-17 Ingersoll Cutting Tool Company Plunge milling insert
US5820308A (en) 1994-11-08 1998-10-13 Ingersoll Cutting Tool Company Plunge milling cutter
US6053672A (en) 1995-09-18 2000-04-25 Iscar Ltd. Milling cutting insert and milling toolholder therefor
US5810518A (en) 1995-09-25 1998-09-22 Sandvik Ab Fastening arrangement for cutting inserts and a cutting insert intended for such an arrangement
US6050751A (en) 1996-01-26 2000-04-18 Sandvik Ab Indexing of cutting inserts
US5855457A (en) 1996-01-31 1999-01-05 Mitsubishi Materials Corporation Disposable cutting tip clamp for a milling machine
US6196771B1 (en) * 1996-10-17 2001-03-06 Seco Tools Ab Face-milling method and apparatus
US6929428B1 (en) 1999-06-16 2005-08-16 Sandvik Ab Cutting insert and cutting insert holder therefor
US6769844B2 (en) 2001-01-10 2004-08-03 Kennametal Inc. Cutting insert and method of making the same
US6877935B2 (en) * 2001-01-18 2005-04-12 Böhlerit Ges. M.B.H. & Co. KG Cutting tool and indexable tip
WO2003074218A1 (en) 2002-03-06 2003-09-12 Iscar Ltd. Tangential cutting insert and insert holder
EP1480774B1 (de) 2002-03-06 2006-06-07 Iscar Ltd. Tangentialschneideinsatz und schneideinsatzhalter
US6811359B2 (en) 2002-05-31 2004-11-02 Kennametal Inc. True helical cutter system
EP1380375A1 (de) 2002-07-11 2004-01-14 Wilhelm Fette GmbH Tangential-Wendeschneidplatte
US20040013478A1 (en) 2002-07-11 2004-01-22 Gerhard Dehn Tangential reversible cutting blade
US7147407B2 (en) * 2002-11-26 2006-12-12 Iscar Ltd. Cutting insert and cutting tool
US7094007B2 (en) 2002-12-04 2006-08-22 Iscar Ltd. Tangential cutting insert and milling cutter
US20050214081A1 (en) 2002-12-04 2005-09-29 Iscar Ltd. Tangential cutting insert and milling cutter
EP1572407B1 (de) 2002-12-04 2007-01-03 Iscar Ltd. Tangentialschneideinsatz und fräswerkzeug
DE10357811A1 (de) 2002-12-24 2004-07-22 Kennametal Inc. Fräsereinsatz mit Spansteuerung und Fräser, in dem dieser verwendet wird
US6742969B1 (en) 2002-12-24 2004-06-01 Kennametal Inc. Milling cutter insert with chip control and milling cutter using the same
US20050063792A1 (en) 2003-09-24 2005-03-24 Iscar, Ltd. Tangential cutting insert and milling cutter
US7063489B2 (en) 2003-09-24 2006-06-20 Iscar Ltd. Tangential cutting insert and milling cutter
US20100303563A1 (en) * 2009-02-12 2010-12-02 Tdy Industries, Inc. Double-Sided Cutting Inserts for High Feed Milling
US7976250B2 (en) * 2009-02-12 2011-07-12 Tdy Industries, Inc. Double-sided cutting inserts for high feed milling

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8430606B2 (en) * 2009-07-26 2013-04-30 Iscar, Ltd. Cutting insert and rotary cutting tool
US20110020080A1 (en) * 2009-07-26 2011-01-27 Iscar, Ltd. Cutting Insert and Rotary Cutting Tool
US20110150582A1 (en) * 2009-12-18 2011-06-23 Sandvik Intellectual Property Ab Face mill for fine milling
US8550753B2 (en) * 2009-12-18 2013-10-08 Sandvik Intellectual Property Ab Face mill for fine milling
US9073126B2 (en) 2010-11-15 2015-07-07 Taegutec, Ltd. Double-sided cutting insert
US20130129432A1 (en) * 2011-11-23 2013-05-23 Sandvik Intellectual Property Ab Cutting insert and a milling tool
US9266175B2 (en) * 2011-11-23 2016-02-23 Sandvik Intellectual Property Ab Cutting insert and a milling tool
US10035195B2 (en) 2012-08-28 2018-07-31 Kennametal Inc. Tool holder for tangential cutting insert
US20150183034A1 (en) * 2012-09-18 2015-07-02 Hartmetall-Werkzeugfabrik Paul Horn Gmbh Cutting insert and tool for machining a workpiece
US9662722B2 (en) * 2012-09-18 2017-05-30 Hartmetall-Werkzeugfabrik Paul Horn Gmbh Cutting insert and tool for machining a workpiece
US9205499B2 (en) 2013-09-11 2015-12-08 Kennametal Inc. Cutting insert with finishing and roughing cutting edges
US9211590B2 (en) 2013-09-20 2015-12-15 Kennametal Inc. Screw head wedge clamp assembly for cutting tool
US9211589B2 (en) 2013-10-08 2015-12-15 Kennametal Inc. Double-sided, nonagon cutting insert
US20150117969A1 (en) * 2013-10-29 2015-04-30 Kennametal Inc. Cutting insert and shim for heavy machining operations
US9475138B2 (en) 2014-01-22 2016-10-25 Kennametal Inc. Cutting tool having insert pocket with cantilevered member
USD713433S1 (en) 2014-03-21 2014-09-16 Kennametal Inc. Cutting insert
US9925596B2 (en) * 2014-05-19 2018-03-27 Sandvik Intellectual Property Ab Turning tool holder and cutting tool insert
US20150328689A1 (en) * 2014-05-19 2015-11-19 Sandvik Intellectual Property Ab Cutting tool insert and cutting tool insert holder
US9744597B2 (en) * 2014-05-19 2017-08-29 Sandvik Intellectual Property Ab Cutting tool insert and cutting tool insert holder
US9981323B2 (en) 2015-07-16 2018-05-29 Kennametal Inc. Double-sided tangential cutting insert and cutting tool system using the same
USD778330S1 (en) 2015-07-16 2017-02-07 Kennametal Inc. Double-sided tangential cutting insert
USD777230S1 (en) 2015-07-16 2017-01-24 Kennametal Inc Double-sided tangential cutting insert
US11185931B2 (en) * 2017-07-18 2021-11-30 Ngk Spark Plug Co., Ltd. Cutting insert
US11484953B2 (en) 2019-06-20 2022-11-01 Kennametal India Limited Tool holder with pocket for accommodating cutting inserts with different clearance angles
US20220250174A1 (en) * 2021-02-10 2022-08-11 Tungaloy Corporation Cutting insert
US11633793B2 (en) * 2021-02-10 2023-04-25 Tungaloy Corporation Cutting insert
EP4556146A1 (de) * 2023-11-20 2025-05-21 Seco Tools AB Schneidwerkzeug mit doppelseitigem tangentialschneideinsatz
WO2025108646A1 (en) * 2023-11-20 2025-05-30 Seco Tools Ab Cutting tool with double-sided tangential cutting insert

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CN101668606A (zh) 2010-03-10
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KR20100016473A (ko) 2010-02-12
CA2682311A1 (en) 2008-11-20
ATE508827T1 (de) 2011-05-15
PL2144724T3 (pl) 2011-11-30
DE102007022535A1 (de) 2008-11-20
EP2144724A1 (de) 2010-01-20
EP2144724B1 (de) 2011-05-11
US20100119313A1 (en) 2010-05-13
RU2434720C2 (ru) 2011-11-27
BRPI0807387A2 (pt) 2014-05-13
RU2009146036A (ru) 2011-06-20
JP2010526678A (ja) 2010-08-05
CN101668606B (zh) 2011-08-03

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